公开(公告)号：US20220247084A1

公开(公告)日：2022-08-04

申请号：US17448563

申请日：2021-09-23

Applicant: University Electronic Science and Technology of China

Inventor： Zaiping NIE ,  Yanhui LIU ,  Xianzheng ZONG ,  Jun HU

IPC: H01Q15/16 ,  H04B7/0417 ,  H04B7/0456 ,  H04B1/00 ,  H01Q3/26

Abstract: This document discloses a reflector antenna system with movable MIMO multiple feeds and adaptive field focusing method for wireless communication in multipath fading environment; the system comprises antenna reflector, multiple feeds, the equal number of the signal receiving channels and signal transmitting channels to the feeds, all the channels are capable to measure and adjust the amplitude and time delay of signals, and the method for amplitude and time delay adjustment of the powered signals. In signal receiving mode the antenna system makes the signal components arrived through unknown multipath superimpose synchronously; in signal transmitting mode, the system let the wave components radiated from different transmitting channels superimpose synchronously, realizing adaptive field focusing at the antenna of the communication target. This antenna system is suitable for point to point wireless communication in wireless propagation environment with multipath fading effect, showing remarkable improvement of SNR of the signals transmitted and received.

公开(公告)号：US20240319023A1

公开(公告)日：2024-09-26

申请号：US18424848

申请日：2024-01-28

Applicant: University Electronic Science and Technology of China

Inventor： Zaihua Duan ,  Qi Huang ,  Huiling Tai ,  Zhen Yuan ,  Yadong Jiang

IPC: G01L1/00

CPC classification number: G01L1/005

Abstract: An ion gradient power-generation stretching strain sensor and its preparation method, which relates to the technical field of flexible strain sensor and flexible wearable electronic technology, includes: latex pipes, an elastic line covered with a first hygroscopic sensitive material, two electrodes, and filter paper covered with a second hygroscopic sensitive material; wherein at both ends of the pipe, the filter paper is fixed inside and the corresponding electrodes of the elastic line at one end; the moisture absorption performance of the second hygroscopic sensitive material is better than the first hygroscopic sensitive material. The present invention realizes self-power supply of the sensor based on the ion gradient, does not require external power supply, and uses the elasticity line of the first hygroscopic sensitive material to achieve the strain detection, without consuming the material of the sensor itself and thus enhances life of the sensor.